Optic Nerve Sheath Diameter Measurements for Carotis EndarterectomyNCT06491693
Can Optic Nerve Sheath Diameter Detect Norological Morbidities for Patients Undergoing Carotis Endarterectomy
An observational study of Optic Nerve Sheath Diameter Measurements for Carotis Endarterectomy, run by Başakşehir Çam & Sakura City Hospital at 1 site in Turkey (Türkiye).
Trial summary
The main purpose of this study is to investigate the contribution of changes in Optic Nerve Sheath Diameter (OSNC) measured at different periods during Carotid Endarterectomy (CEA) operations to the prediction of neurological problems detected in the postoperative period. Read more about this study
- Who is it for?
- Ages 50 to 80 years
- Conditions the study is for
- Optic Nerve Sheath Diameter Measurements for Carotis Endarterectomy
- How many people
- 40 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 1 Jul 2024to 1 Apr 2025
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 50 to 80 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: It was planned to include 40 patients, male and female, between the ages of 50 and 80, who were scheduled for elective CEA under general anesthesia, taking into account previous similar studies (1,3,4) and power analysis.
Who may be able to join
- Male and female patients between the ages of 50 and 80, who are planned for elective CEA under general anesthesia, who come in a spontaneously breathing, conscious and cooperative state.
Who cannot join
- Patients who are under 50 years of age, over 80 years of age, have neurological findings caused by reasons other than carotid lesion, and are intubated.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Turkey (Türkiye)1 site, 1 recruiting
- Recruiting
BasaksehirCamveSakuraSehirH
Istanbul
About this study
Official title: Can Ultrasonographic Screening of Optic Sheath Diameter Be an Early Detector of Norological Morbidities Related Carotis Endarterectomy
The main purpose of this study is to investigate the contribution of changes in Optic Nerve Sheath Diameter (OSNC) measured at different periods during Carotid Endarterectomy (CEA) operations to the prediction of neurological problems detected in the postoperative period. The secondary aim of the study is to examine the relationship between optic nerve sheath diameter measurement and other routinely used perioperative follow-up parameters in terms of predicting neurological problems.
Read the detailed description
CEA operations are generally performed on elderly patients and patients with different comorbidities. These patients have carotid artery stenosis and often thrombus. 85% of all stroke cases are due to ischemic causes, and 15-30% of them are due to carotid artery stenosis. The treatment method is usually surgery. CEA operations. Early detection of cerebral hypoperfusion and ischemia during the operation is important. Carotid clamp applications, which must be used during the operation upon the decision of the surgical team, may cause cerebral hypoperfusion. In addition, the resulting systemic hypotension further worsens this situation. In order to prevent cerebral hypoperfusion, carotid shunt applications can be performed to ensure flow continuity, and at the same time, cerebral hypoperfusion is tried to be prevented by keeping the mean arterial pressure high. Close monitoring of these cases and follow-up of cerebral perfusion adequacy is important to detect ischemia and embolism events that may develop especially during these periods. ECG, blood pressure, oxygen saturation, near infrared spectroscopy (NIRS), and Bispectral index (BIS) are routinely used in monitoring. In addition, it is reported in the literature that there are changes in ONCH, which can be easily evaluated with USG, in cases such as ischemic stroke and increased intracranial pressure, an increasing trend occurs and shows an excellent correlation with invasive intracranial pressure monitoring. ONSD has been associated with increases in intracranial pressure. In these patients in whom a carotid clamp is placed, an increase in intracranial pressure due to ischemia and cerebral hypoperfusion and a corresponding increase in ONSD may be observed. In this context, in our study, in addition to routine monitoring methods, we measured the Optic Nerve Sheath Diameter (OSCN), which can be examined practically with the help of ultrasonography (USG), which we use in our daily practice in the operating room, and does not require any additional cost and labor, and thus, we measured the parameters such as cerebral ischemia and increased intracranial pressure that may develop in the intraoperative period. We planned to investigate its contribution to the prediction of neurological problems and its relationship with other follow-up parameters. Measurement of ONSC with USG is a very simple, noninvasive and non-harmful method.
- Keywords
- optic nerve sheath dimater, carotis endarterectomy
What is being measured
The primary outcome is the main question the study is designed to answer.
The aim is to investigate the contribution of changes in Optic Nerve Sheath Diameter (OSNC) measured at different periods during Carotid Endarterectomy (CEA) operations to the prediction of neurological problems detected in the postoperative period.
Optic nerve sheath diameter measurement with USG is made using a high-frequency linear probe after the system settings are made suitable for the lens retina and vitreous body. It is performed by applying gel to the upper eyelid and placing the transducer in the temporal part of the eye, with the patient in a supine position with the head and body elevated 20-30 degrees.Optic nerve sheath diameter measurement with USG is made using a high-frequency linear probe after the system settings are made suitable for the lens retina and vitreous body. It is performed by applying gel to the upper eyelid and placing the transducer in the temporal part of the eye, with the patient in a supine position with the head and body elevated 20-30 degrees.
Measured: 4 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted9 Jul 2024
- Study start1 Jul 2024
- Primary completion31 Mar 2025 (estimated)
- Study completion1 Apr 2025 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Optic Nerve Sheath Diameter Measurements for Carotis EndarterectomyStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 40 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Başakşehir Çam & Sakura City Hospital
- Sponsor type
- Other government
- Responsible party
- Principal investigator, Zülfiye Yıldız, Başakşehir Çam & Sakura City Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06491693
- Sponsor's protocol ID
- KAEK-11/22.05.2024.02
- Status last verified
- Jan 2025
- First submitted
- 1 Jul 2024
- Last updated
- 8 Jan 2025
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 8 Jan 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Can Ultrasonographic Screening of Optic Sheath Diameter Be an Early Detector of Norological Morbidities Related Carotis Endarterectomy
- ClinicalTrials.gov ID
- NCT06491693
- Acronym / sponsor ID
- KAEK-11/22.05.2024.02
- Keywords
- optic nerve sheath dimater, carotis endarterectomy
- Study type
- Observational
- Recruitment status
- Recruiting
- Enrolment
- 40 participants (estimated)
- Lead sponsor
- Başakşehir Çam & Sakura City HospitalOther government
- Study start
- 1 Jul 2024 (actual)
- Primary completion
- 31 Mar 2025 (estimated)
- Study completion
- 1 Apr 2025 (estimated)
- First posted
- 9 Jul 2024 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The main purpose of this study is to investigate the contribution of changes in Optic Nerve Sheath Diameter (OSNC) measured at different periods during Carotid Endarterectomy (CEA) operations to the prediction of neurological problems detected in the postoperative period. The secondary aim of the study is to examine the relationship between optic nerve sheath diameter measurement and other routinely used perioperative follow-up parameters in terms of predicting neurological problems.
Detailed description
CEA operations are generally performed on elderly patients and patients with different comorbidities. These patients have carotid artery stenosis and often thrombus. 85% of all stroke cases are due to ischemic causes, and 15-30% of them are due to carotid artery stenosis. The treatment method is usually surgery. CEA operations. Early detection of cerebral hypoperfusion and ischemia during the operation is important. Carotid clamp applications, which must be used during the operation upon the decision of the surgical team, may cause cerebral hypoperfusion. In addition, the resulting systemic hypotension further worsens this situation. In order to prevent cerebral hypoperfusion, carotid shunt applications can be performed to ensure flow continuity, and at the same time, cerebral hypoperfusion is tried to be prevented by keeping the mean arterial pressure high. Close monitoring of these cases and follow-up of cerebral perfusion adequacy is important to detect ischemia and embolism events that may develop especially during these periods. ECG, blood pressure, oxygen saturation, near infrared spectroscopy (NIRS), and Bispectral index (BIS) are routinely used in monitoring. In addition, it is reported in the literature that there are changes in ONCH, which can be easily evaluated with USG, in cases such as ischemic stroke and increased intracranial pressure, an increasing trend occurs and shows an excellent correlation with invasive intracranial pressure monitoring. ONSD has been associated with increases in intracranial pressure. In these patients in whom a carotid clamp is placed, an increase in intracranial pressure due to ischemia and cerebral hypoperfusion and a corresponding increase in ONSD may be observed. In this context, in our study, in addition to routine monitoring methods, we measured the Optic Nerve Sheath Diameter (OSCN), which can be examined practically with the help of ultrasonography (USG), which we use in our daily practice in the operating room, and does not require any additional cost and labor, and thus, we measured the parameters such as cerebral ischemia and increased intracranial pressure that may develop in the intraoperative period. We planned to investigate its contribution to the prediction of neurological problems and its relationship with other follow-up parameters. Measurement of ONSC with USG is a very simple, noninvasive and non-harmful method.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
Who may qualify
- Ages
- 50 to 80 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- It was planned to include 40 patients, male and female, between the ages of 50 and 80, who were scheduled for elective CEA under general anesthesia, taking into account previous similar studies (1,3,4) and power analysis.
Key inclusion criteria (1 listed)
- Male and female patients between the ages of 50 and 80, who are planned for elective CEA under general anesthesia, who come in a spontaneously breathing, conscious and cooperative state.
Key exclusion criteria (1 listed)
- Patients who are under 50 years of age, over 80 years of age, have neurological findings caused by reasons other than carotid lesion, and are intubated.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
The aim is to investigate the contribution of changes in Optic Nerve Sheath Diameter (OSNC) measured at different periods during Carotid Endarterectomy (CEA) operations to the prediction of neurological problems detected in the postoperative period.
Time frame: 4 months
Optic nerve sheath diameter measurement with USG is made using a high-frequency linear probe after the system settings are made suitable for the lens retina and vitreous body. It is performed by applying gel to the upper eyelid and placing the transducer in the temporal part of the eye, with the patient in a supine position with the head and body elevated 20-30 degrees.Optic nerve sheath diameter measurement with USG is made using a high-frequency linear probe after the system settings are made suitable for the lens retina and vitreous body. It is performed by applying gel to the upper eyelid and placing the transducer in the temporal part of the eye, with the patient in a supine position with the head and body elevated 20-30 degrees.
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 8 Jan 2025.
- Individual participant dataSharing planned: No
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Optic Nerve Sheath Diameter Measurements for Carotis Endarterectomy, run by Başakşehir Çam & Sakura City Hospital at 1 site in Turkey (Türkiye).
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 8 Jan 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Turkey (Türkiye). Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Zulfiye Yildiz, M.D. (5323262605 ext. 0090, drzulfiye@hotmail.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
The aim is to investigate the contribution of changes in Optic Nerve Sheath Diameter (OSNC) measured at different periods during Carotid Endarterectomy (CEA) operations to the prediction of neurological problems detected in the postoperative period. (time frame: 4 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 8 Jan 2025.